Analysis

  • max time kernel
    11s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 11:17

General

  • Target
    Termo de Adesao-76AM12.hta
  • Size 2KB
  • Sample260803-nd61bagf34
  • SHA256 63cc94f97c0e0199199f53b544537fcad8ed54959ed9c824ec53c7b4dbb57190
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 28 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\SysWOW64\mshta.exe
    C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\Termo de Adesao-76AM12.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
    1⤵
    • Badlisted process makes network request
    • System Location Discovery: System Language Discovery
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:5936
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4336
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:2968
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4124
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:4640
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:1412
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:424
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:2928
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:3232
    • C:\Windows\SysWOW64\attrib.exe
      "C:\Windows\System32\attrib.exe" +h +s "C:\opjsqnjs\"
      2⤵
      • System Location Discovery: System Language Discovery
      • Views/modifies file attributes
      PID:4388
    • C:\opjsqnjs\opjsqnjs.exe
      "C:\opjsqnjs\opjsqnjs.exe" C:\opjsqnjs\opjsqnjs
      2⤵
        PID:2516
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
        2⤵
          PID:4752
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:00000000
            3⤵
              PID:3308
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul
            2⤵
            • Executes a command shell one-liner
            • System Network Configuration Discovery: Internet Connection Discovery
            PID:5548
            • C:\Windows\SysWOW64\PING.EXE
              ping -n 300 -w 1000 127.0.0.1
              3⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:4520

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              832AB82D73FCFC01AD0FFE44E3566FF7

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\832AB82D73FCFC01AD0FFE44E3566FF7
              • Size 418B
              • SHA256 0daf0e472f079b39b427841e555dbaf7bf0ef20e5158d99697366a8a3e585500
              • MD5 SHA1 SHA512 TLSH

              8B2B9A00839EED1DFDCCC3BFC2F5DF12

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
              • Size 1KB
              • SHA256 63b14543360f5e89942ea8d5113526e64fbc71c1207328f0136b3a495d921dd0
              • MD5 SHA1 SHA512 TLSH

              B46811C17859FFB409CF0E904A4AA8F8

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
              • Size 528B
              • SHA256 d2bb091268ade68ad8121d2184d0fbce128070156304bd4de312e6fbd267409c
              • MD5 SHA1 SHA512 TLSH

              832AB82D73FCFC01AD0FFE44E3566FF7

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\832AB82D73FCFC01AD0FFE44E3566FF7
              • Size 192B
              • SHA256 92c0788eb5bd23c92ee6561df5f84fe32f5712511b4ef148f3ca0512f665c67a
              • MD5 SHA1 SHA512 TLSH

              8B2B9A00839EED1DFDCCC3BFC2F5DF12

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
              • Size 174B
              • SHA256 679218d98accc7cfea67b172ca8681976585a655e20a1d6a5bc26ff6bd995ab4
              • MD5 SHA1 SHA512 TLSH

              B46811C17859FFB409CF0E904A4AA8F8

              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
              • Size 170B
              • SHA256 99529c2665bf798a2a8e15091b179a77f39dacdf620d20b02c8ca9d8b56446e9
              • MD5 SHA1 SHA512 TLSH

              a1.zip

              • Path C:\opjsqnjs\a1.zip
              • Size 494KB
              • SHA256 19881c34372a39d9829bc1ef9a008c5f53cb1650716dca7d5098b3b2a4ffcca5
              • MD5 SHA1 SHA512 SSDEEP TLSH

              a2.zip

              • Path C:\opjsqnjs\a2.zip
              • Size 1.3MB
              • SHA256 39b94e66519db5d9701c4d60336e981de8b153867ab558a0a4b0efe2e08a744a
              • MD5 SHA1 SHA512 SSDEEP TLSH

              a3.zip

              • Path C:\opjsqnjs\a3.zip
              • Size 2KB
              • SHA256 75756a37f760edde16257aad7e8b10eaf34b540e02f066d372108dc002d884fb
              • MD5 SHA1 SHA512 TLSH

              opjsqnjs

              • Path C:\opjsqnjs\opjsqnjs
              • Size 1.3MB
              • SHA256 30af0a4b9b7c7d8cf41c169be3d51c03d9dabd0c18ed699b31850b618b5db55e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              opjsqnjs.exe

              • Path C:\opjsqnjs\opjsqnjs.exe
              • Size 957KB
              • SHA256 bdd2b7236a110b04c288380ad56e8d7909411da93eed2921301206de0cb0dda1
              • MD5 SHA1 SHA512 SSDEEP TLSH

              memory/2516-113-0x00000000061B0000-0x0000000006377000-memory.dmp